Simulating and investigating compressible flows interaction with fractal structures

Omar Es-Sahli, Adrian Sescu, Mohammed Z Afsar, Oliver Buxton

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Abstract

Previous experimental and numerical studies have investigated incompressible flow interactions with multi-scale fractal structures with the objective of generating turbulence at multiple scales. Depending on various flow conditions, it was found that these fractal structures are able to enhance mixing and scalar transport, and in some cases to contribute to the reduction of flow generated sound in certain frequency ranges. The interaction of compressible flows with multi-scale fractal structures did not receive much attention as the focus was entirely on the incompressible regime. The objective of this study is to conduct large eddy simulations of flow interactions with various fractal structures in the compressible regime and to extract and analyze different flow statistics in an attempt to determine the effect of compressibility. Immersed boundary methods will be employed to overcome the difficulty of modeling the fractal structures, with adequate mesh resolution around small features of the fractal shapes.
Original languageEnglish
Number of pages1
Publication statusPublished - 18 Nov 2018
Event71st Annual Meeting of the APS Division of Fluid Dynamics: Boundary Layers: High Speed/ Compressible - Georgia World Congress Center, Georgia, United States
Duration: 18 Nov 201821 Nov 2018
https://www.apsdfd2018.org/

Conference

Conference71st Annual Meeting of the APS Division of Fluid Dynamics
Abbreviated titleAPS-DFD 2018
CountryUnited States
CityGeorgia
Period18/11/1821/11/18
Internet address

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Keywords

  • computational fluid dynamic (CFD) model
  • flow interactions
  • fractal structures

Cite this

Es-Sahli, O., Sescu, A., Afsar, M. Z., & Buxton, O. (2018). Simulating and investigating compressible flows interaction with fractal structures. Abstract from 71st Annual Meeting of the APS Division of Fluid Dynamics, Georgia, United States.